Wall S D, Brant-Zawadzki M, Jeffrey R B, Barnes B
AJR Am J Roentgenol. 1982 Feb;138(2):307-11. doi: 10.2214/ajr.138.2.307.
Twenty-six patients with clinically documented acute cerebral infarction were evaluated by computed tomography within the first 24 hr. In 21 patients, subtle mass effects and/or focal areas of decreased attenuation corresponding to areas of clinical deficit were demonstrated. Enhancement occurred in only five of 15 infarctions rescanned after contrast administration. In three of these, the region of infarction became isodense after contrast administration. In a patient with multifocal infarcts, enhancement was the only clue to infarction in one focus. The improved spatial and contrast resolution of current generation scanners appears to have significantly increased the sensitivity of computed tomography in demonstrating acute cerebral infarction and has important clinical application.
26例经临床确诊的急性脑梗死患者在发病后24小时内接受了计算机断层扫描（CT）检查。其中21例患者显示出与临床症状相对应的轻微占位效应和/或局部密度减低区。在15例接受增强扫描的梗死灶中，只有5例出现强化。其中3例在增强扫描后梗死区域变为等密度。在1例多灶性梗死患者中，强化是其中一个梗死灶的唯一诊断线索。新一代扫描仪提高的空间分辨率和对比度分辨率显著提高了CT诊断急性脑梗死的敏感性，具有重要的临床应用价值。
